166322426 has 4 divisors (see below), whose sum is σ = 249483642. Its totient is φ = 83161212.

The previous prime is 166322411. The next prime is 166322449. The reversal of 166322426 is 624223661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 159997201 + 6325225 = 12649^2 + 2515^2 .

It is a junction number, because it is equal to n+sod(n) for n = 166322392 and 166322401.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41580605 + ... + 41580608.

Almost surely, 2^166322426 is an apocalyptic number.

166322426 is a deficient number, since it is larger than the sum of its proper divisors (83161216).

166322426 is an equidigital number, since it uses as much as digits as its factorization.

166322426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83161215.

The product of its digits is 20736, while the sum is 32.

The square root of 166322426 is about 12896.6052122254. The cubic root of 166322426 is about 549.9420611144.

The spelling of 166322426 in words is "one hundred sixty-six million, three hundred twenty-two thousand, four hundred twenty-six".